It seems humans.txt is mostly used as a hidden inside joke, as I don’t think I’ve seen the official logos being used. There is a useful addon for Chrome (and I’m sure other browsers too) that notifies you when a site you are on has a humans.txt.

I personally like it being used for more than just listing your team members. Something along the lines of a bonus content on a DVD or a funny or clever easter egg.

And speaking of easter eggs, I came across this interesting comment by someone describing a “feature” on their site:

I’m a big fan of the Konami code jQuery plugin. On my site, when you put it in you get a better deal on your VPS.

I’m keeping this in mind for the next time I’ll be ordering something online.